Glossopharyngeal Nerve (9th Cranial Nerve)
What is a Glossopharyngeal Nerve? The glossopharyngeal nerve, known as the ninth cranial nerve (CN IX), is a mixed nerve that carries afferent sensory and efferent motor information. Sensory: Innervates the oropharynx, carotid body and sinus, posterior 1/3 of the tongue, middle ear cavity, and Eustachian tube. Special Sensory: Provides taste sensation to the posterior…